The sources said an Internet centre in the US received an e-mail that said a flight emanating from India, bound for either

They said police are checking vehicles round the clock and many police officials were moving around the airport complex in plainclothes.

The e-mail threat comes close on the heels of a recent letter found in Tiruchirapalli airport that said there could be terror attacks on airports in south India. The letter prompted authorities to tighten security at airports across the country.

About 200 CISF commandos have descended on the Chennai airport which now resembles a fortress. But on closer scrutiny, chinks in the

security armour are obvious.

A multi-layer security ring has been thrown around the airport, from the runway to the periphery of the airport premises, and barricades put up to slow down vehicles.

But there are no metal detectors or mirror undercheckers to detect vehicles fitted with explosives.

chennai: security at the chennai airport has been put on high alert after three anonymous calls were received stating that an indian airlines aircraft would be hijacked wednesday.
all the three calls in tamil were received by the ia office in a span of 15 minutes from 10:15 am, ia sources said.
according to the sources, the callers’ tone sounded like that of a woman or a child.
immediately, the airlines security informed the airports authority of india duty officer, who in turn alerted the airport police.
ia sources said the enhanced security measures would continue throughout the day. a review meeting of various agencies was also held in connection with the matter.
in a related development, security measures at railway stations in tamil nadu have also been beefed up.
railway police said passengers were being frisked and their luggages being checked before being allowed to board respective trains. sniffer dogs were also used for conducting searches, sources said.
at central railway station here a vigil was being maintained with the help of closed circuit tv also.

New Delhi: Airports in Delhi, Bangalore and Chennai were on Wednesday night put on high security alert in the wake of intelligence inputs that terrorists of Pakistan or Afghanistan origin may strike these installations by this weekend ahead of the anniversary of demolition of Babri Masjid.
The Civil Aviation Bureau is understood to have sent out the alert to the three airports following intelligence reports that several suspected terrorists have infilitrated into the country to carry out strikes.
Keeping this in mind, sources said, “ladder-point” (at the time of boarding the plane) security checks have been introduced.
Major airports across the country, especially those in the western region, have been on high alert and extra vigil for the past few days following the terror strikes in Mumbai.
Extra surveillance has been mounted in most of the airports, with additional CISF and police personnel being deployed to keep an eye around the terminal as well as the perimeter.
Sniffer dogs have been deployed in some airports, while watchers in plainclothes were also put on the job. Sky Marshals were being put on planes flying on sensitive routes, sources said.

“Due to the alert, we have 10,000 policemen on duty looking after various parts of the city,” the commissioner said. “Normally, we would not have so many policemen on duty, but we have to check suspicious vehicles and lodges.”

Initially, the city police will be on a high alert for 10 days. Sekar said. “After that we may need to mobilise additional resources. By tweaking shifts and allowing policemen to take rest in turns, we can maintain the alert status for months if need be.”

The city police has 18,000 personnel. Sekar admitted that routine work like maintaining traffic, maintaining law and order, court proceedings and VIP security does not leave too many policemen for anti-terrorist work.

“We want people to be alert for out of the way objects,” he said. “Like when you are in a mall, you see a tiffin box. People normally don’t carry their lunch for shopping. Or you see a car parked on your street for three days. Or an unclaimed bag on the bus or train. They have to call us when in doubt.”

On his meeting with the citizens groups, Sekar said, “We have called the IT people, mall and theatre owners, lodge and cyber cafe owners. We will tell them how they can cooperate with us. They all have private security guards. We will tell them what they need to do. How to do vehicle checks, how to check people and when to inform us.”

“Cyber cafe owners have to be alert or later they will face embarrassing situations,” the commissioner added. “Lodges too have to alert us when they feel suspicious about any person’s identity.”

New Delhi: An e-mail threat from Deccan Mujahideen, the mastermind behind the Mumbai attack last week has put Indian airports on high alert. The e-mail specifies that the terrorist group are planning to attack three major Indian airports-Delhi, Chennai and Bangalore between December 3 and 7. In the light of the threat, security is beefed up in these airports.The e-mail was sent from Saudi Arabia and received by Indira Gandhi Airport officials, Delhi.

“A call was received at the nearest police station at 9.12 a.m. claiming that six people would enter the court complex in lawyer’s dress and would plant explosives in the premises,” the official added.

He also said that the sprawling court complex in north Delhi would be blown up between 10 a.m. to 2.30 p.m.

“We have rushed to the scene along with the bomb disposal squad. Intensive searches are being carried out in the court complex,” the official added.

Following the threat, the Delhi High Court suspended all the hearings, which were scheduled today, to Friday.